\r\nwhich convey fluid from one place to another. Most of the time,

\r\npipelines are placed underground and are encumbered by soil weight

\r\nand traffic loads. Corrosion of pipe material is the most common

\r\nform of pipeline deterioration and should be considered in both the

\r\nstrength and serviceability analysis of pipes.

\r\nThe study in this research focuses on concrete pipes in sewage

\r\nsystems (concrete sewers). This research firstly investigates how to

\r\ninvolve the effect of corrosion as a time dependent process of

\r\ndeterioration in the structural and failure analysis of this type of pipe.

\r\nThen three probabilistic time dependent reliability analysis methods

\r\nincluding the first passage probability theory, the gamma distributed

\r\ndegradation model and the Monte Carlo simulation technique are

\r\ndiscussed and developed. Sensitivity analysis indexes which can be

\r\nused to identify the most important parameters that affect pipe failure

\r\nare also discussed.

\r\nThe reliability analysis methods developed in this paper contribute

\r\nas rational tools for decision makers with regard to the strengthening

\r\nand rehabilitation of existing pipelines. The results can be used to

\r\nobtain a cost-effective strategy for the management of the sewer

\r\nsystem.","references":null,"publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 91, 2014"}